I have a Sony XM-752EQX amp that has all of a sudden quit working. I get no sound from the speakers. The unit powers up with the power light coming on. In addition to that the over current, offset, and thermal lights all light up green and flash continually in some sort of a coded pattern. I can't find anything to tell me what the flashing indicates. They all three flash in the same pattern together. Any suggestions as to what is wrong?
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1000W system is enough power to blast your neighborhood. If the + and - connections are correct the speaker balance is connected properly. I assume you have checked the speakers and they have been working fine.
Thus, the problem is internal, within the amp. Make certain that you have selected the proper sound out to the speakers. With the speakers attached, keep switching around from one sound path to the other. Make certain, your source (input to the amp) is proper and the signal is communicating with the amp. If the amp has direct out ports to L/R Center and Surround that you can use wires to connect to the speakers, try that method.
You should be seeing BCM trouble codes (DTCs) for the radio with a code reader. I am assuming you are hearing something (noise) from the speakers with the radio on. If so, you may have lost the programming in the radio - you could try re-flashing it. However, that radio has a number of memory locations that are set whenever the radio is turned on - one or more memory modules in the radio may now be faulty.
The amp is in protection. Disconnect any speaker from it, then turn it back on, if it's not flashing, check your speakers with a meter and check speaker wires for shorts. If it's still flashing, you've blown the protection circuit and it needs to be replaced or repaired. Hope this helps
does the amp power on? usually if you cant get any power to an amp, its a problem with the ground connection. did you shave the paint off from the area where the ground wire touches the metal of your cat?
If the amp still goes into protect mode, the easiest thing to do is disconnect the RCA cables from the amp and see if still goes into protect mode (after turning off/on). If it does, the issue lies in the amp or the wiring to/from the amp (most likely case). Check to make sure no speaker wires came loose and touched +12V or ground (car body). From the sound of it, my guess is something internal to the amp died and will need repair.